TABLE 2.

Details of HERV loci examined

Locus(i)	Type of element in published human genome sequence	No. of alleles examined	No. of full-length alleles	No. of solo LTRs	Proportion of full-length alleles
Fixed loci
12q14a	Full-length provirus	37	17	20	0.46
109a	Full-length provirus	37	31	6	0.84
7 Unnamed locib	Full-length provirus	147	147	0	1
s480c10c	Solo LTR	39	37	2	0.95
56 Other locic	Solo LTR	2,184	0	2,184	0
Total no. of alleles			232	2,212
Overall proportion of full-length allelesd			0.10
Mean proportion of full-length alleles					0.14
Unfixed loci
154c11 (11q22)a	Full-length provirus	37	21	14	0.6
8c8 (K115)a	Full-length provirus	46	2	0	1
165c5c	Solo LTR	39	0	28	0
859c12c	Solo LTR	39	19	4	0.83
399c8c	Solo LTR	39	0	19	0
240c3c	Solo LTR	39	0	36	0
1601c9c,e	Solo LTR	39	0	36	0
2563c7c	Solo LTR	39	0	10	0
Total no. of alleles			42	147
Overall proportion of full-length allelesd			0.22
Mean proportion of full-length alleles					0.30

^aData from Fig. 2 in reference 16. We excluded 2c7 (108), where a tandem duplication has occurred and the solo LTR may have arisen from this recombination event, and 1p13, which could not be categorized as fixed or unfixed. Diploid samples from a total of 18 individuals plus the published haploid human genome sequence were screened.

^bRepresented by bands in the Southern blot in Fig. 1 of reference 16. We assumed that humans are homozygous for full-length proviruses at these loci. Diploid samples from a total of 10 individuals plus the published haploid human genome sequence were screened.

^cFrom our study; diploid samples from a total of 19 individuals plus the published haploid human genome sequence were screened. See reference 1 for the genomic location.

^dThis figure is calculated from the total number of alleles and the number of these that are full-length.

^eIn Table 2 of reference 1, this locus is listed incorrectly as 1609c9.